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1.激光如同其他物理诱变因素一样,能诱发小麦的遗传变异。有的能遗传,有的不能遗传。诱发的变异,在一代出现的极少数变异能稳定,如晚熟、矮杆。有的二代即消失,如曲颈、曲基、剑叶畸形。二代分离最大占81.5%,三代次之占53.4%,四代47.3%,五代60.25%。激光后代可能分离出超过杂种后代的分离,分离出原始品种不具有的新性状。2.不同激光器的诱变效果不同,本试验的结果以氮分子,氦氖、钕玻璃的诱变效果较好。品种对激光的敏感性也有差异。3.以干种子照射效果较好。重复处理无显著效果,Co~(60)r射线辐照激光效果还有待深入研究。氮分子照射花粉,在一代能看到变异趋向。4.激光处理可能是育种的一个新途径,值得继续探索。
1. The laser, like other physical mutagens, can induce genetic variation in wheat. Some can inherit, and some can not inherit. Induced variation, a very small number of mutations that occur in a generation can be stable, such as late-maturing, dwarfed. Some second generation disappears, such as song neck, Qu Ji, leaf and leaf deformity. The second generation separation accounted for the largest 81.5%, followed by three generations accounted for 53.4%, 47.3% four generations, five generations of 60.25%. The progeny of the laser may separate more than the offspring of hybrids and isolate new traits that the original progeny do not have. Different mutagenesis effects of different lasers, the results of this experiment with nitrogen molecules, helium neon, neodymium glass mutagenic effect is better. Varieties of laser sensitivity are also different. 3. The effect of irradiation of dry seeds is better. Repeated treatment no significant effect, Co ~ (60) r laser irradiation effect remains to be further studied. Nitrogen molecules irradiate pollen, one generation can see the trend of variation. 4. Laser processing may be a new way of breeding, it is worth to continue to explore.